Fig. 1

Apparatus and task setup. A The Kinarm exoskeleton robot used for both tasks. B The virtual workspace for OH. Participants must use the green paddles to hit as many of the 300 red targets as possible. The participant’s arms are not visible during the trial; they are included for illustrative purposes only. C The virtual workspace for OHA. Participants must hit as many of the 200 targets as possible while avoiding the 100 distractors. An object’s status as a target or distractor is determined by its shape